Ok thanks guys, i now know how the best way to tackle this, JB
On 2 Sep, 11:19, Aleksey Gureiev <[email protected]> wrote: > Here's what you basically do: > > require 'rexml/document' > require 'base64' > > filename = 'file.dat' > xml = '... contents of test.xml ...' > > doc = REXML::Document.new(xml) > str = > doc.root.elements['Sheet1'].elements['PhotoTaken1'].text.gsub(/\s+/, '') > > File.open(filename, 'wb') { |f| f.write Base64.decode64(str) } > > In case of Paperclip::Processor, you will need to read the contents of the > uploaded file and output the decoded contents into a temp file. Here's a good > link to see how processors are > built:http://mdeering.com/posts/018-paperclip-processors-doing-so-much-more... > > Also, I just checked the contents of the encoded data and it doesn't appear > to be an image, so... just be warned. Check it in the hex editor when > decoded. You'll see what I mean. > > To put it back into XML, just read the contents of the saved Paperclip file, > encode it (Base64.encode64) and put it back into the XML tag (see creating > documents with REXML). > > - A > > On 02/09/2010, at 12:59 PM, John Butler wrote: > > > > > Ok thanks, i did read about using Base64 to decode it but my main issue > > is as you say understanding > > what format it was decoded in the first place. Please find a sample > > attached > > > thanks > > > JB > > > Aleksey Gureiev wrote: > >> How the image is encoded into XML? Can you give an example? > > >> Is it a CDATA section with Base64 or something else? If it's a known > >> encoding, you just read it as an attribute / tag value and then decode > >> using an appropriate decoder, then open the file in binary mode and > >> save the decoded version there. If it's paperclip that accepts the > >> XML, there's such thing as processors that you can use to write a > >> processor that extracts the image and replaces the original XML file > >> with the extracted thing. > > >> In order to put the image back into XML, again you use the encoder > >> (Base64, for example) and put the resulting value inside the tag. > > >> Again, if you give a sample XML, I may be able to give more precise > >> suggestions. > > >> Cheers, > >> - A > > > Attachments: > >http://www.ruby-forum.com/attachment/4995/test.xml > > > -- > > Posted viahttp://www.ruby-forum.com/. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Ruby on Rails: Talk" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/rubyonrails-talk?hl=en. > > > > PGP.sig > < 1KViewDownload -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
